Questions of Circles

Find the area of this Semicircle with a diameter of 18 cm

• 254.34 cm2

• 127.17 cm2

• 56.52 cm2

• 28.26 cm2

What is the area of this circle?

• 82.13 m2

• 78.54 m2

• 314.16 m2

• 170.12 m2

What is the perimeter of the semi-circle?

• 11 yd

• 17.27 yd

• 34.54 yd

• 28.27 yd

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 28.26 m²

How many total degrees make a circle?

Match the term to the correct image.

d

e

f

b

a

c

g

radius

diameter

semicircle

arc

chord

secant

tangent

Fill in the blanks to complete the statement:
In the circle, the diameter is ​ ​ (a)   inches and the radius is ​ ​ (b)   inches.

• 28

• 3.5

• 14

• 7

To find the radius, ​ (a)   the diameter by 2.

• divide

• multiply

Drag and Drop: Match the correct parts of a circle.

c

d

e

f

b

a

diameter

radius

tangent

center

secant

chord

A group of students created a circle during a game. The circumference of the circle was about 78.5 feet, and the diameter of the circle was 25 feet. Label the ratio that best represents the value of pi.

a

b

25

78.5